Design and implement a class daytype that implements the day of the week in a program. the class daytype should store the day, such as sunday for sunday. the program should be able to perform the following operations on an object of type daytype: step a: set the day. step b: print the day. step c: return the day. step d: return the next day. step e: return the previous day. step f: calculate and return the day by adding certain days to the current day. for example, if the current day is monday and we add 4 days, the day to be returned is friday. similarly, if today is tuesday and we add 13 days, the day to be returned is monday. step g: add the appropriate constructors. write the definitions of the functions to implement the operations for the class daytype.

#include<iostream>

#include<string>

usingnamespace std;

void menu(); //declartion of function to show the menu

classdayType//creating the class

{

      string Wdays[7];

      int i;

      string day;

      string prDay;

      string NxtDay;

      string AddDays;

public:

      dayType(string);//constructor with one parameter

      string setday(); //declartion of function to set the day

      string preday(); // declartion of function to find privious day

      void Nextday(); // declartion of function to find Next day

      string add(int n); // declartion of function to find after addingthenumber of days given by the user

      void print(); // declartion of function to print the result

};

int main()

{

      int n;

      string d;

      menu(); //displaying menu

      cout <<"Enter the day :";

      getline(cin, d); //Takes the day from the user

      dayType Da(d); //creating an object of a class

      Da.setday();

      Da.preday();

      Da.Nextday();

      cout <<"Enter the No. of days to add :";

      while (!(cin >> n) ||n<0) { //validation checking

                    cin.clear();

                    cin.ignore(999, '\n');

                    cout <<"Invalid data type! \nPlease enter No. of daysto add again :";

      }

      Da.add(n);

      Da.print();

      system("pause");

      return 0;

}

dayType::dayType(stringi) :day(i){ //Defintion of a constructor with one parameter

      Wdays[0] = "Mon";

      Wdays[1] = "Tues";

      Wdays[2] = "Wednes";

      Wdays[3] = "Thurs";

      Wdays[4] = "Fri";

      Wdays[5] = "Satur";

      Wdays[6] = "Sun";

}

stringdayType::setday() //Function to set the day

{

      if (day == Wdays[0])

      {

             i = 0;

      }

      elseif (day == Wdays[1])

      {

             i = 1;

      }

      elseif (day == Wdays[2])

      {

             i = 2;

      }

      elseif (day == Wdays[3])

      {

             i = 3;

      }

      elseif (day == Wdays[4])

      {

             i = 4;

      }

      elseif (day == Wdays[5])

      {

             i = 5;

      }

      elseif (day == Wdays[6])

             i = 6;

      else

      {

             day = "Invalid Input";

             i = 7;

      }

      return day;

}

stringdayType::preday() //Function to find the preivous day

{

      if (i == 0)

             prDay = Wdays[6];

      elseif (i == 7)

             prDay = "Invalid Input";

      else

             prDay = Wdays[i - 1];

      return prDay;

}

voiddayType::Nextday() //Function to find Next day

{

      if (i == 6)

             NxtDay = Wdays[0];

      elseif (i == 7)

             prDay = "Invalid Input";

      else

             NxtDay = Wdays[i + 1];

}

stringdayType::add(intn) // function to find after adding the number of days given by the user

{

      n = n + i;

      while (n>= 7)

      {

             n = n - 7;

      }

      if (i == 7)

             Wdays[n] = "Invalid Input ";

      return AddDays = Wdays[n];

}

voiddayType::print()

{

      cout << endl <<"\tDay="<< day <<"day"<< endl;

      cout <<"\tPrevious day :"<< prDay <<"day"<< endl;

      cout <<"\tNext day :"<< NxtDay <<"day"<< endl;

      cout <<"\tAfter Adding Days :"<< AddDays <<"day"<< endl;

}

void menu() //Function to display menu

{

      cout <<"MENU"<< endl;

      cout <<"\tEnter 'Sun' for 'Sunday'"<< endl;

      cout <<"\tEnter 'Mon' for 'Monday'"<< endl;

      cout <<"\tEnter 'Tues' for 'Tuesday'"<< endl;

      cout <<"\tEnter 'Wednes' for 'Wednesday'"<< endl;

      cout <<"\tEnter 'Thurs' for 'Thursday'"<< endl;

      cout <<"\tEnter 'Fri' for 'Friday'"<< endl;

      cout <<"\tEnter 'Satur' for 'Saturday'"<< endl;